OTTAWA -- Pierre-Edouard Bellemare had a goal and an assist in the third period for the Vegas Golden Knights, helping them to a 5-3 win against the Ottawa Senators at Canadian Tire Centre on Thursday.
Jonathan Marchessault scored, Colin Miller and Alex Tuch each had two assists, and Marc-Andre Fleury made 27 saves for the Golden Knights (7-8-1).
"The puck finally went in the net for us," Vegas coach Gerard Gallant said. "So that was really a key for us, to get five goals tonight. Real happy about that, and I thought, for the most part, we had a real good game."
[WATCH: All Golden Knights vs. Senators highlights]
Thomas Chabot had a goal and an assist, Matt Duchene and Ryan Dzingel scored, and Craig Anderson made 37 saves for Ottawa (6-7-3), which trailed 3-0.
"We just had a bad start, myself included," Dzingel said. "You can't give a team like that a couple-goal lead. It's tough when you battle back, too, after that. So [we've] just got to have a better start, myself included. You've got to be ready to go."
The Golden Knights took a 4-3 lead when William Carrier backhanded a shot past the blocker of Anderson at 9:16 of the third period.
Bellemare scored into an open net when Anderson was down to make it 5-3 at 12:00. The Senators challenged for goaltender interference, but it was ruled that Anderson initiated contact with Carrier.
"[The Carrier-Bellemare-Reaves line] played well," Gallant said. "They were setting the pace again for us tonight, they played real good. So they deserve everything they get."
Video: VGK@OTT: Carrier goes around defender and scores
Marchessault gave the Golden Knights a 1-0 lead at 15:26 of the first period when he beat Anderson blocker side with a snap shot from the top of the right face-off circle on the power play. Shea Theodore's point shot past a heavily screened Anderson on the power play made it 2-0 with 20 seconds left in the period.
Holden finished a backhand deke over the blocker of Anderson to make it 3-0 at 17:21 of the second period.
"For most of the game we played fast," Holden said, "and that's obviously the identity of our team, making sure we're using our speed to our advantage."
Duchene chipped a rebound over Fleury's blocker to cut it to 3-1 at 17:50.
Dzingel got a bouncing puck in the slot and beat Fleury over the glove with a snap shot to cut it to 3-2 at 6:57 of the third period. Chabot one-timed a loose puck in the slot into an open net to tie it 3-3 at 8:01. Vegas challenged, but it was ruled no goaltender interference infractions occurred.
"I was really proud of the boys, the way we battled," Duchene said. "I thought we did some really good things tonight and obviously, when you tie it 3-3 in the third, it can go either way. We had the momentum. Tough way to lose."
Video: VGK@OTT: Chabot fires loose puck into open net
They said it
"I think it starts in our [defensive] zone. We're coming out of our [defensive] zone clean and we're using our speed. I think when we turn pucks over, we've got five guys flying into the offensive zone and it's tough to handle because we've got a fast team, and when we work hard like that, you can beat any team with skill as long as you outwork them." -- Golden Knights forward Ryan Reaves
"He was great. He does a lot of really good things. He's really good with the puck, he's a big body (6-foot-3, 196 pounds). I think the thing that impressed me the most about him is the maturity in his game at such a young age (19). He's going to have a long, amazing career." -- Senators forward Matt Duchene on teammate Brady Tkachuk, who played his first game since injuring his leg Oct. 15
Need to know
Chabot is tied for third in NHL scoring; he has 22 points (five goals, 17 assists) in 16 games. Mikko Rantanen of the Colorado Avalanche leads with 24 (five goals, 19 assists). ... Senators forward Mark Stone extended his point streak to five games with an assist (11 points; two goals, nine assists). ... Fleury is 6-3-1 in his past 10 starts after starting the season 0-3-0.
Golden Knights: At the Montreal Canadiens on Saturday (7 p.m. ET; SN, TVAS, ATTSN-RM, NHL.TV)
Senators: At the Tampa Bay Lightning on Saturday. (7 p.m. ET; CITY, SUN, NHL.TV)
Video: Golden Knights fend off Senators for 5-3 win